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Journals / Bitlis Eren Üniversitesi Fen Bilimleri Dergisi / 2026 / Volume: 14 Issue: 1

The Effect of Pistachio Vera Shell Ash on Concrete Performance

Antep Fıstığı Kabuğu Külünün Beton Performansı Üzerindeki Etkisi

Murat Doğruyol(SİİRT ÜNİVERSİTESİ)0000-0003-0406-7854
Mahmut Durmaz(SİİRT ÜNİVERSİTESİ)0000-0002-6060-4258
Pages
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Publication Date
2025-03-26
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results indicate that as the PSA substitution rate increased, the water demand of the concrete mixtures rose, leading to reduced workability.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Cement production is a major contributor to global energy consumption and CO2 emissions, prompting the need for sustainable alternatives in the construction industry.
📊
Key Findings & Data:PSA was substituted at 3%, 5%, and 10% by weight of CEM I 42.5 R cement in concrete mixtures, and its effects on the physical, mechanical, and microstructural properties of concrete were evaluated.
💡
Conclusion & Impact:The results indicate that as the PSA substitution rate increased, the water demand of the concrete mixtures rose, leading to reduced workability.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Supplementary cementitious materials (SCM)s · Pistachio vera shell ash (PSA) · Concrete compressive strength

Abstract

Cement production is a major contributor to global energy consumption and CO2 emissions, prompting the need for sustainable alternatives in the construction industry. This study investigates the potential of Pistachio Vera Shell Ash (PSA), an agricultural waste, as a partial replacement for cement in concrete. PSA was substituted at 3%, 5%, and 10% by weight of CEM I 42.5 R cement in concrete mixtures, and its effects on the physical, mechanical, and microstructural properties of concrete were evaluated. The results indicate that as the PSA substitution rate increased, the water demand of the concrete mixtures rose, leading to reduced workability. At the 3% replacement level, the compressive strength of the concrete remained comparable to that of plain concrete and only a 10% reduction was observed at 28 days. However, higher substitution rates (5% and 10%) resulted in significant strength losses, with reductions of 21% and 42.7%, respectively. Despite its non-pozzolanic nature, PSA demonstrated potential as a supplementary cementitious material (SCM), particularly in regions with abundant pistachio production. The study concludes that PSA can contribute to sustainable construction practices by reducing the environmental impact of concrete production and promoting the recycling of agricultural waste. Further research is recommended to optimize PSA substitution levels and enhance its compatibility with concrete matrices.

Özet

Çimento üretimi, küresel enerji tüketimine ve karbondioksit emisyonlarına en büyük katkıyı sağlayan unsurdur. Günümüzde beton kalitesini artırmak ve çimento tasarrufu sağlamak için birçok çalışma yürütülmektedir. Bu çalışmada, yakıt olarak kullanılan Antep fıstığı külü (PSA), beton karışımında ağırlıkça %3, 5 ve 10 oranlarında CEM I 42.5 R çimentosu ile değiştirilmiştir. PSA'nın betonun fiziksel ve mekanik özellikleri üzerindeki etkisi belirlenmiş ve sonuçlar taramalı elektron mikroskobu (SEM), enerji dağılımlı X-ışını (EDX) ve X-ışını kırınımı (XRD) gibi mikroyapısal analizlerle desteklenmiştir. Deneyler sonucunda, PSA ikame oranı arttıkça numunelerin su ihtiyacı artmış ve işlenebilirlik azalmıştır. Betonun işlenebilirliği ve dayanım kaybı %3 PSA ikamesinde neredeyse değişmezken, %10 PSA ikamesinde betonun hem işlenebilirliği hem de dayanımı sırasıyla %50 ve %42,7 oranında azalmıştır.

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Cite This Article

Doğruyol, M., Durmaz, M. (2025). The Effect of Pistachio Vera Shell Ash on Concrete Performance. Bitlis Eren Üniversitesi Fen Bilimleri Dergisi, Volume: 14 Issue: 1. https://doi.org/10.17798/bitlisfen.1602440

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